Need a turret with blue eye
For my mappack, I would like to have a turret not with a red, but with a blue, friendly eye. Kinda the same blue like the portal's colour in the "thinking with Portals"-writing, which you can see above.
Now, I only need this one change and don't want to study into the subject of modelling. Now I need someone who does me a favour and either explains how to make or makes me the following:
- a turret with a blue, friendly eye
- Normal turrets shall be used in different levels of the pack, but not in the same like the blue turret
- Doesn't need to shoot, should be able to fall down and, if possible, to be picked up
- An instruction how to properly include the final product in my mappack
Of course you will be mentioned in the credits and everything.
Thank you 
A map pack coming soon. - click for more information
You can use bspzip to add a new texture in: materialsmodelsnpcsturretturret_eye.vtf is the one that has the color of the eye 
Hope that helps
You can use bspzip to add a new texture in: materialsmodelsnpcsturretturret_eye.vtf is the one that has the color of the eye
Hope that helps
P.M Skotty, he can help you, but if you want to do it yourself.
You will need,
GCFScape
VTFedit
Photoshop or an image editing program
Notepad++
MDLcompiler
1. Go into gcfscape and find the turret model and materials
2. Go into Mdlcompiler and decompile the MDl.
3. After decompiled, the compiler will spew out a qc and alot of smds.
4. Go into VTFedit and export the turret materials to tga.
5. Go into photoshop and change the eye to blue.
6. Go into vtfedit again and import the tga and save it as a different name.
7. Go into notepad++ and change the material file path to yours change the Mdl name. And save
8. Go back to mdlcompiler and select model compile, then find your qc and then Compile!
9. You're done, enjoy your blue eye.
If all else fails...
Create a brush that is parented to your turret small enough so it covers the turret's eye, then cover it with your custom texture.
Press and hold LALT and drag the handle in the 3d grid in order for it to not snap to the grid.
Also make sure to kill the brush once the turret dies.
But a new skin is definitely a better way 
by the way: if you decide to create a new model just for your special turret this thread is very useful: post42321.html#p42321
Also, a heads up. If you want to change the colors of a turret's casing, disable smart edit in npc_portal_turret_floor
Add a new parameter called:
rendercolor Color numbers
Or make an output
OnMapSpawn - turret - Color - Color numbers.
This will not work with patterns